The present invention relates to a multi-function peripheral 1 that can allow a paper feeding cassette deck 3 to connect to an apparatus main body 2. The redundant NVM may be arranged as a series configuration, a parallel configuration, a single-ended device, a differential device, a simple logic circuit function, a complex logic circuit function, andor as part of an RFID tag system. The different wall thicknesses result in different flexibility characteristics of the stent in the longitudinal direction.